Removing duplicate URL's from search cache

I made a custom search script and I like to remove all the duplicate URLs that get mixed into the results.
My scripts returns via STDOUT:

Title:
Discription:
URL:

I am thinking I better combine title and URL together prior to sorting and dupe removal. I can sort it, just never seen anyting on dupe removal in any of the perl references I have, and not even sure what is the proper method for combining Titel & URL to a one line link.

By the way, it's considered courteous to grade questions when you get
an answer. (You have two ungraded questions right now, some effort
was put forth on your behalf because you requested it... it would seem
proper to at least acknowledge that effort)

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